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670945374 = 2321123147331
BaseRepresentation
bin100111111111011…
…101000001011110
31201202111120000200
4213333131001132
52333230222444
6150324404330
722424640651
oct4777350136
91652446020
10670945374
11314805210
121688466a6
13a90087c8
1465173898
153dd83969
hex27fdd05e

670945374 has 48 divisors (see below), whose sum is σ = 1654833024. Its totient is φ = 194475600.

The previous prime is 670945367. The next prime is 670945439. The reversal of 670945374 is 473549076.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69112 + ... + 78219.

It is an arithmetic number, because the mean of its divisors is an integer number (34475688).

Almost surely, 2670945374 is an apocalyptic number.

670945374 is an abundant number, since it is smaller than the sum of its proper divisors (983887650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

670945374 is a wasteful number, since it uses less digits than its factorization.

670945374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147373 (or 147370 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 670945374 is about 25902.6132658464. The cubic root of 670945374 is about 875.4453782691.

The spelling of 670945374 in words is "six hundred seventy million, nine hundred forty-five thousand, three hundred seventy-four".

Divisors: 1 2 3 6 9 11 18 22 23 33 46 66 69 99 138 198 207 253 414 506 759 1518 2277 4554 147331 294662 441993 883986 1325979 1620641 2651958 3241282 3388613 4861923 6777226 9723846 10165839 14585769 20331678 29171538 30497517 37274743 60995034 74549486 111824229 223648458 335472687 670945374